Calculate84
Calculate84 is #105 in Education Free in United States and charting in 1 of 24 countries we track.
Updated 27 Sep 2026 · rankings refresh through the day
DeveloperCentury Light LLC
CategoryEducation
PriceFree
Released
Rating★ 4.8 (53k)
Version3.0.4
Age rating12+
First seen by us
25 Sep 2026
25 Sep 2026Installs (est.)1M+ worldwide
Rating
4.8 ★
53k ratings
Measured
Best rank now
#105
Education FreeMeasured
Calculate84 on the App Store
App details
App ID
1459712793
Publisher
Century Light LLC
Content rating
12+
Calculate84 downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. iPhone downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Where Calculate84's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
Retention · share of new users still active
Day 1
Day 7
Day 30
Time spent · per daily user
Average time spent Pro
min a day
Sessions a day Pro
Time per session Pro
min
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Business model: Ad-led
How Calculate84 makes money: subscriptions, one-off purchases and ads.
Ads · 17 ad networks
Ads
/mo
of revenue
Where it ranks now
Every top chart it appears in across 24 countries.
| Country | Charts | Rank |
|---|---|---|
| United States | EducationFree | #105 |
Apps near Calculate84 on the chart
Education Free, around #105.
Ratings
App Store, worldwide.
Rating
4.8 ★
53k ratings
Measured
Ratings
53k
Measured
About Calculate84
Graphing made for iPhone
Calculate84 brings the graphing calculator experience to iPhone with a fast, touch-friendly design.
What you can do:
• Plot and explore graphs with smooth touch controls
• Find familiar calculator functions quickly
• Scroll naturally through equations and results
• Get clearer, more helpful error messages
• Send feedback directly from the app
Why we built Calculate84
We relied on graphing calculators ourselves and wanted an app that felt easier to use on a modern phone. Before launch, we worked with students to refine the experience, and we continue improving it based on user feedback.
Send feedback
Tap the red Feedback button in the app.
Terms of Use (EULA): https://calculate84.com/terms-of-use
Calculate84 brings the graphing calculator experience to iPhone with a fast, touch-friendly design.
What you can do:
• Plot and explore graphs with smooth touch controls
• Find familiar calculator functions quickly
• Scroll naturally through equations and results
• Get clearer, more helpful error messages
• Send feedback directly from the app
Why we built Calculate84
We relied on graphing calculators ourselves and wanted an app that felt easier to use on a modern phone. Before launch, we worked with students to refine the experience, and we continue improving it based on user feedback.
Send feedback
Tap the red Feedback button in the app.
Terms of Use (EULA): https://calculate84.com/terms-of-use
Latest updates
3.0.4
Improved equation history and result formatting, more reliable Pro purchases, better accessibility, and fixes for math input and stability.